Spanish Wave 1/2 or full lace unit is 150% density, adjustable strap and combs for extra security.The Mi Amour Collection hair is raw quality. This means our hair is constructed from one donor with the full strand laid in the same direction. Mi Amour Hair has a life span of 2-3 years with proper care. Any color application will effect the integrity of the hair so it is recommended to be performed by a licensed professional. The use sulfate free shampoo and conditioner is suggested for maintaining your extensions or unit.